purees - pumpkin, carrot, pear, apple, broccoli are all god for this. Frozen peas/corn/carrots are really easy to steam up and puree if you're short on time.
Finger food - steamed veges are good but some are a bit slippery to pick up. ds started having toast with marmite from about 6 1/2 months, he loves it! Pretty much anything steamed/softened and cut into easy-to-grasp pieces is pretty good - there are some websites/forums on BLW if you do a search, which have some advice on what to start with.
ds got quite constipated when he started solids at 4 1/2 months and he still is, be aware that banana can be very binding, which is a shame because it's so easy to prepare!
I wanted to do BLW but ds was so ready for solids at 4 1/2 months and it was a bit too soon for finger food, I found that I then got into the habit of purees so it took me a while to break out of it - now he loves his finger food much more than being spoon fed and has a great pincer grasp with things like peas etc. (getting it into his mouth is the main challenge!). He tried boiled egg for the first time today which is also a great finger food, but Plunket says not to give in until after 7 months.
re: purees - if you go to the supermarket and check out the baby food it can give you soem good ideas of what foods/combinations you can make